One of the most important of these is a fluctuation in the densityof electrons and other electrically-charged particles in the ionosphere.
最重要的一点是在电离层的电子和其他带电粒子的密度是波动的。
2
The two laser beam system has been used to measure the relative densityof linen dust, with the feature of wide measurement range, good sensitivity and restraining the intensity fluctuation noise.
The liquid superheat limit and critical radius of bubbles in homogeneous nucleateboiling are determined in the present paper by using densityfluctuation theory of statistical theomodynamics.